Buffer chamber system for vertical feeding of mine materials

Abstract

The invention relates to the technical field of underground structures, in particular to a buffer chamber system for vertical feeding of mine materials, an excavation chamber is designed in a roadway near a feeding hole in the direction of the feeding hole to serve as a buffer channel, a buffer bottom table is arranged in the buffer channel, the surface of the buffer bottom table is a detachable steel plate, and the surface of the buffer bottom table is a 45-degree inclined plane; i-shaped steel is used for pouring and reinforcing the lower part with concrete, and a spring buffer device is mounted below the feeding hole for proper pressure relief. The problems of buffering, pressure relief and dust prevention after ground materials are vertically put into a well are solved, meanwhile, automatic collection after the materials are put can be achieved, the device can serve as a temporary buffering device to store part of the materials, and the materials are conveyed to a material demand site after being received.

Description

Technical Field

[0001] The invention relates to the technical field of underground structures, and in particular to a buffer chamber system for vertically placing materials in mines. Background Art

[0002] In mining engineering, the transportation of underground materials is an important link. The traditional method is to put materials into the underground through vertical drilling holes on the ground, but this method has problems such as buffering, pressure relief and dust prevention. The existing buffer devices and transfer chambers have problems such as complex structure, large engineering volume, unreliable system operation, poor working environment for workers, high labor intensity, etc., and the existing technical solutions have failed to effectively solve the problems of impact energy absorption, dust control and on-site transportation coordination of materials after deep wells.

[0003] To this end, the present application designs a buffer chamber system for vertical delivery of mine materials to solve the above problems. Summary of the invention

[0004] In order to make up for the deficiencies in the prior art, the present invention provides a buffer chamber system for vertical delivery of mine materials. Through ingenious design, a vertical feeding system with integrated buffering, dust prevention, pressure relief and transportation functions is formed for vertical delivery of ground materials into the mine.

[0005] In order to achieve the above technical objectives, the present invention provides the following technical solutions: A method for designing a buffer chamber system for vertical delivery of materials in a mine, comprising: excavating a buffer channel in a tunnel near a feeding hole at a certain elevation angle in the direction of the feeding hole to form a buffer chamber; arranging a buffer base in the buffer channel; the buffer base is a detachable steel plate and a slope structure cast with concrete, and a spring buffer device is connected at the upper end of the slope and below the feeding hole; a dust-blocking plate with an adjustable angle is arranged on the side wall of the buffer chamber at the upper part of the bottom end of the buffer base, and the dust-blocking plate forms an inclined angle with the side wall of the buffer chamber; a shuttle-type horizontal buffer bin is arranged on the tunnel side at the lower end of the buffer chamber, a dust cover is installed on the upper part of the shuttle-type horizontal buffer bin, and the dust cover and the dust cover form a continuous dust-proof barrier; the top of the buffer chamber is connected to a water storage sedimentation tank at the bottom of the tunnel through a pressure discharge pipe, and a multi-stage filter layer is arranged in the water storage sedimentation tank; the buffer base and the shuttle-type horizontal buffer bin form a stepped material transmission channel, and the material slides into the shuttle-type horizontal buffer bin after being decelerated by the buffer base.

[0006] Preferably, the excavation angle of the buffer channel is 35°~45°, preferably an elevation angle of 40°.

[0007] Preferably, the slope angle of the buffer base is 40°~50°, preferably 45°; the detachable steel plate is laid horizontally with 10# channel steel, the lower part is supported by an I-beam frame, and C30 concrete is filled between the I-beam frame and the surrounding rock of the tunnel.

[0008] Preferably, the spring buffer device is composed of multiple groups of coil springs arranged in a matrix, the spring stiffness coefficient is 50-100 kN / m, and a spherical wear-resistant steel plate is arranged on the top of the spring, and the thickness of the steel plate is 10-20 mm.

[0009] Preferably, the telescopic range of the dust blocking plate can be adjusted according to the actual size of the buffer channel, and the telescopic length can be adjusted by installing a hydraulic push rod on the side wall of the buffer chamber; the dust blocking plate body is made of wear-resistant steel plate, and the outer layer is covered with a rubber buffer layer, and the thickness of the rubber layer is 20~50mm.

[0010] Preferably, the pressure relief pipe is a PVC pipe or a galvanized steel pipe with a diameter of 200-300 mm. The pipe body extends regularly from the top of the buffer chamber to the top of the tunnel to the water storage sedimentation tank, and a gas-water separator is arranged at the end.

[0011] Preferably, the water storage sedimentation tank includes three levels of filtration layers, from top to bottom: First-stage coarse filter layer: crushed stone with a particle size of 20-50 mm and a thickness of 300-500 mm; Second-level fine filter layer: sand and gravel with a particle size of 5~10mm and a thickness of 200~300mm; The third activated carbon layer: thickness 100~150mm; A HDPE anti-seepage membrane is laid at the bottom of the pool, and drainage pipes are installed on the side walls to connect to the mine drainage system.

[0012] Preferably, the dust shield is an arc-shaped shield body, covering more than 2 / 3 of the upper space of the horizontal buffer bin. The shield body is made of polyurethane composite material, and a spray dust suppression device is arranged inside, with the spray direction toward the falling trajectory of the material.

[0013] Preferably, a pressure sensor is added to the top of the buffer chamber, and the pressure sensor is linked to the gas-water separator of the pressure relief pipe. When it is detected that the air pressure exceeds 0.2MPa, the separator pressure relief valve is automatically opened.

[0014] The beneficial effects of the present invention are: The present invention provides a design method for a buffer chamber system for vertical delivery of materials into a mine. Through ingenious design, a vertical feeding system with integrated buffering, dust prevention, pressure relief and transportation functions is formed for vertical delivery of ground materials into the mine. The system can effectively reduce the impact energy of the materials and the dust concentration in the receiving area of ​​the mine. At the same time, the materials can be automatically collected after delivery, thereby improving the transportation efficiency of the materials. The system can also be used as a temporary buffer device to store part of the materials, which will be delivered to the location where the materials are needed after being received. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the retractable dust-blocking plate of the present invention; Figure 3 It is a schematic diagram of the internal structure of the sedimentation tank of the present invention; Figure 4 It is a schematic diagram of the structure of the dust cover of the present invention.

[0016] In the figure, 1—feeding hole; 2—tunnel; 3—buffer channel; 4—buffer chamber; 5—buffer bottom platform; 51—detachable steel plate; 6—spring buffer device; 7—dust blocking plate; 8—shuttle car type horizontal buffer bin; 9—dust cover; 10—pressure discharge pipe; 11—water storage sedimentation tank; 12—multi-stage filter layer; 13—HDPE anti-seepage membrane; 14—drainage pipe; 15—mine drainage system; 16—pressure sensor; 501—10# Channel steel, 502—I-beam frame; 503—C30 concrete; 601—helical spring; 602—spherical wear-resistant steel plate; 701—hydraulic push rod; 702—rubber buffer layer; 901—arc cover; 902—spray dust suppression device; 101—pressure relief pipe body; 102—gas-water separator; 103—separator pressure relief valve; 1201—coarse filter layer; 1202—fine filter layer; 1203—activated carbon layer. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the accompanying drawings here can be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0019] Figure 1-Figure 4 This is a specific embodiment of the present invention, which is a buffer chamber system for vertical delivery of mine materials. Figure 1As shown, a buffer channel 3 is excavated in a lane 2 near the feeding hole 1 in the direction of the feeding hole 1 at a certain elevation angle to form a buffer chamber 4; a buffer base 5 is arranged in the buffer channel 3; the buffer base 5 is a slope structure of a detachable steel plate 51 and concrete pouring, and a spring buffer device 6 is connected to the upper end of the slope and below the feeding hole 1; a dust-blocking plate 7 with an adjustable angle is arranged on the side wall of the buffer chamber 4 at the upper bottom end of the buffer base 5, and the dust-blocking plate 7 forms an inclined angle with the side wall of the buffer chamber 4 A shuttle-type horizontal buffer bin 8 is arranged on the side of the tunnel 2 at the lower end of the buffer chamber 4, and a dust cover 9 is installed on the upper part of the shuttle-type horizontal buffer bin 8, and the dust cover 9 and the dust blocking plate 7 form a continuous dust barrier; the top of the buffer chamber 4 is connected to the water storage sedimentation tank 11 at the bottom of the tunnel 2 through a pressure discharge pipe 10, and a multi-stage filter layer 12 is arranged in the water storage sedimentation tank 11; the buffer base 5 and the shuttle-type horizontal buffer bin 8 form a stepped material transmission channel, and the material slides into the shuttle-type horizontal buffer bin 8 after being decelerated by the buffer base 5.

[0020] The excavation angle of the buffer channel 1 is 40°, and the buffer channel is 6m long×3m wide×2.5m high. The slope angle of the buffer base 5 is 45°; the removable steel plate 51 is laid horizontally with 10# channel steel 501, and the lower part is supported by an I-beam frame 502, and C30 concrete 503 is filled between the I-beam frame 502 and the surrounding rock of the tunnel. The spring buffer device 6 is composed of 12 groups of coil springs 601 arranged in a 3×4 matrix, with a spring stiffness coefficient of 80kN / m, and a spherical wear-resistant steel plate 602 is set on the top of the spring, with a thickness of 15mm.

[0021] like Figure 2 As shown, the telescopic range of the dust blocking plate 7 is 0.3~1.2m, and the telescopic length is adjusted by installing a hydraulic push rod 701 on the side wall of the buffer chamber 4; the dust blocking plate 7 is made of wear-resistant steel plate, and the outer layer is covered with a rubber buffer layer 702, and the thickness of the rubber layer is 50mm.

[0022] like Figure 3 As shown, the pressure relief pipe 10 is a galvanized steel pipe with a diameter of 300 mm. The pipe body 101 regularly extends from the top of the buffer chamber 4 to the top of the tunnel 2 to the water storage sedimentation tank 11, and a gas-water separator 102 is arranged at the end.

[0023] like Figure 3 The water storage sedimentation tank 11 shown includes three filter layers 12, which are: First-stage coarse filter layer 1201: crushed stone with a particle size of 20-50 mm and a thickness of 300 mm; Second-stage fine filter layer 1202: sand and gravel with a particle size of 5-10 mm and a thickness of 200 mm; The third activated carbon layer 1203: thickness 100 mm; A HDPE anti-seepage membrane 13 is laid at the bottom of the pool body, and a drainage pipe 14 is arranged on the side wall to be connected to the mine drainage system 15.

[0024] like Figure 4 As shown, the dust shield 9 is an arc-shaped shield body, covering more than 2 / 3 of the upper space of the horizontal buffer bin 8. The shield body 901 is made of polyurethane composite material, and a spray dust suppression device 902 is arranged inside, and the spray direction is toward the falling trajectory of the material.

[0025] In addition, a pressure sensor 16 is added at the top of the buffer chamber 4. The pressure sensor 16 is linked to the gas-water separator 102 of the pressure relief pipe 10. When it is detected that the gas pressure exceeds 0.2MPa, the separator pressure relief valve 103 is automatically opened.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in the field should be included in the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A buffer chamber system for vertically feeding materials into a mine, comprising a feeding hole (1), characterized in that: An inclined buffer channel (3) is excavated in the lane (2) near the feeding hole (1) in the direction of the feeding hole (1) to form a buffer chamber (4); a buffer base (5) is arranged in the buffer channel (3), and the buffer base (5) is an inclined structure of a detachable steel plate (51) and concrete casting, and a spring buffer device (6) is connected to the upper end of the inclined structure and below the feeding hole (1); a retractable dust blocking plate (7) is arranged on the side wall of the buffer chamber (4) above the bottom end of the buffer base (5), and a retractable dust blocking plate (7) is arranged on the lane (2) at the lower end of the buffer chamber (4). ) side is provided with a shuttle-type horizontal buffer bin (8), a dust cover (9) is installed on the upper part of the shuttle-type horizontal buffer bin (8), and the dust cover (9) and the dust blocking plate (7) form a continuous dust barrier; the top of the buffer chamber (4) is connected to the water storage sedimentation tank (11) at the bottom of the tunnel (2) through a pressure discharge pipe (10), and a multi-stage filter layer (12) is arranged in the water storage sedimentation tank (11); the buffer bottom platform (5) and the shuttle-type horizontal buffer bin (8) form a stepped material transmission channel, and the material slides into the shuttle-type horizontal buffer bin (8) after being decelerated by the buffer bottom platform (5).

2. The buffer chamber system for vertical delivery of mine materials according to claim 1 is characterized in that: The excavation angle of the buffer channel (3) is 35°~45°.

3. The buffer chamber system for vertical delivery of mine materials according to claim 1 is characterized in that: The buffer base (5) has an inclined angle of 40° to 50°, the detachable steel plate (51) is horizontally laid using 10# channel steel (501), the lower part is supported by an I-beam frame (502), and C30 concrete (503) is filled between the I-beam frame (502) and the surrounding rock of the tunnel.

4. The buffer chamber system for vertical delivery of mine materials according to claim 1 is characterized in that: The spring buffer device (6) is composed of a plurality of groups of coil springs (601) arranged in a matrix, the spring stiffness coefficient is 50-100 kN / m, and a spherical wear-resistant steel plate (602) is arranged on the top of the spring, and the thickness of the steel plate is 10-20 mm.

5. The buffer chamber system for vertical delivery of mine materials according to claim 1 is characterized in that: The telescopic range of the dust blocking plate (7) is adjusted according to the actual size of the buffer channel (3), and the telescopic length is adjusted by installing a hydraulic push rod (701) on the side wall of the buffer chamber (4); the dust blocking plate (7) is made of a wear-resistant steel plate, and the outer layer is covered with a rubber buffer layer (702), and the thickness of the rubber layer is 20-50 mm.

6. The buffer chamber system for vertical delivery of mine materials according to claim 1 is characterized in that: The pressure relief pipe (10) is a PVC pipe or a galvanized steel pipe with a diameter of 200-300 mm. The pipe body (101) regularly extends from the top of the buffer chamber (4) to the top of the tunnel (2) to the water storage sedimentation tank (11), and a gas-water separator (102) is provided at the end.

7. The buffer chamber system for vertical delivery of mine materials according to claim 1 is characterized in that: The water storage sedimentation tank (11) comprises three levels of filtration layers (12), which are, from top to bottom: The first coarse filter layer (1201): crushed stone with a particle size of 20~50mm and a thickness of 300~500mm; The second fine filter layer (1202): sand and gravel with a particle size of 5~10mm and a thickness of 200~300mm; The third activated carbon layer (1203): thickness 100~150mm; A HDPE anti-seepage membrane (13) is laid on the bottom of the pool body, and a drainage pipe (14) is arranged on the side wall to be connected to the mine drainage system (15).

8. The buffer chamber system for vertical delivery of mine materials according to claim 1 is characterized in that: The dust shield (9) is an arc-shaped shield body, covering more than 2 / 3 of the upper space of the horizontal buffer bin (8); the shield body (901) is made of a polyurethane composite material, and a spray dust suppression device (902) is arranged inside, with the spray direction facing the material falling trajectory.

9. The buffer chamber system for vertical delivery of mine materials according to claim 1 is characterized in that: A pressure sensor (16) is additionally provided at the top of the buffer chamber (4). The pressure sensor (16) is linked to the gas-water separator (102) of the pressure relief pipe (10). When the gas pressure is detected to be above 0.2 MPa, the separator pressure relief valve (103) is automatically opened.

Images